# -*- coding: utf-8 -*-
# https://blog.csdn.net/weixin_52040868
# 公众号：测个der
# 微信：qing_an_an


import sys
from PyQt5.QtWidgets import *

class QWIN(QWidget):
    def __init__(self):
        super(QWIN, self).__init__()
        self.setWindowTitle("内置信号与槽函数")
        self.resize(330,50)
        btn = QPushButton('关闭',self)
        btn.clicked.connect(self.btn_close)

    def btn_close(self):
        self.close()

if __name__ == '__main__':
    app = QApplication(sys.argv)
    win = QWIN()
    win.show()
    sys.exit(app.exec_())